Understanding the role of Li in PEO based batteries with selective Li isotope labeling
The need to improve the sustainability, performance, and safety of lithium batteries urges the scientific community in the search for alternatives to currently employed electrolytes based on organic solvents. One of the possible families of alternative candidates are solid polymer electrolytes, which, being non-flammable and not dispersive, would significantly reduce safety concerns. The system most intensively studied is Poly(Ethylene Oxide) (PEO) which is able to dissolve large amounts of lithium ions and, in the melt phase, afford conductivities of the order of 10-3 S/cm. In PEO, lithium ions are coordinated with the oxygens of the polymer chains in cages and the conduction mechanism proceeds through jumps from cage to cage. Using the spectrometer WASP and isotopic substitution methods, we aim to measure the timescale of the escape of lithium ions from the oxygen cage surrounding it in the model polymer electrolyte PolyEthylene Oxide (PEO)/ lithium bis(trifluoromethanesulfonyl)imide (LiTFSI). We will access lithium dynamics with selective substitution 7Li to 6Li.
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The recommended format for citing this dataset in a research publication is in the following format:
OHL Michael; FALUS Peter; FARAONE Antonio and FORSTER Stephan. (2023). Understanding the role of Li in PEO based batteries with selective Li isotope labeling. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-2081
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This data is not yet public
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